This former political and administrative center of West Berlin is of special interest to Americans. It was the scene of John F. Kennedy's memorable (if grammatically shaky) "Ich bin ein Berliner" speech on June 26, 1963. Berliners have renamed the square around the building the John-F.-Kennedy-Platz. From the 72m (236-ft.) tower, a Liberty Bell replica is rung every day at noon. Most visitors come here to climb the tower for a panoramic view of Berlin. This Freedom Bell, a gift from the American people in 1950, symbolized U.S. support for the West Berliners during the Cold War. The document chamber contains a testimonial bearing the signatures of 17 million Americans who gave their moral support to the struggle.